Vela X is a large, 3ı 2ı, radio-emitting pulsar wind nebula (PWN) powered by the Vela pulsar in the Vela supernova remnant. Using four Suzaku/XIS observations pointed just outside Vela X, we have found hard X-ray emission extending throughout the fields of view. The hard X-ray spectra are well represented by a power-law. The photon index was measured to be constant at Γ 2.4, similar to that of the southern outer part of Vela X. The power-law flux decreases with increasing distance from the pulsar. These properties lead us to propose that the hard X-ray emission is associated with the Vela PWN. The larger X-ray extension found in this work strongly suggests that distinct populations of relativistic electrons form the X-ray PWN and Vela X, as was recently inferred from multiwavelength spectral modeling of Vela X.
|Data di pubblicazione:||2011|
|Titolo:||Suzaku Detection of Diffuse Hard X-Ray Emission outside Vela X|
|Citazione:||Katsuda, S., Mori, K., Petre, R., Yamaguchi, H., Tsunemi, H., Bocchino, F., et al. (2011). Suzaku Detection of Diffuse Hard X-Ray Emission outside Vela X. PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN, 63(SP3), S827-S836.|
|Appare nelle tipologie:||1.01 Articolo in rivista|